Powder-In-Closed-Tube (PICT) fabrication of Bi2Sr2CaCu2Ox superconducting tape

Date

4-2009

Degree

Bachelor of Science in Applied Physics

College

College of Arts and Sciences (CAS)

Adviser/Committee Chair

Marvin U. Herrera

Abstract

Unsheated Bi2Sr2CaCu2Ox (Bi2212) superconducting tapes were successfully fabricated using the powder-in-closed-tube (PICT) method which involves packing of Bi-2212 powder into an aluminum tube, pressing, and annealing. The samples were separated into two batches; the first batch was annealed for 300 minutes, (750o for 30 minutes) and the second batch was annealed for 600 minutes (750o for 30 minutes and 600oC for 570 minutes), both at a rate of 30oC min-1. X-ray diffraction verified the existence of Bi-2212 in the tape. The graph of the AC magnetic susceptibility temperature showed that the critical temperature (Tc) of the tape sintered for 300 minutes is -78K while the tape annealed for 600 minutes was found to be non-superconducting. Scanning electron microscope (SEM) images showed that the sample annealed for longer time attained more spatial homogeneity than the other sample. The hardness measurement obtained using the KIYA Sheishuko Hardness Tester Model 174886 also agree with the SEM images which showed that the tape annealed for longer time is more compact, thus harder than that of the tape annealed for 300 minutes.

Language

English

Location

UPLB Main Library Special Collections Section (USCS)

Call Number

Thesis

Document Type

Thesis

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